CN112932325B - Round brush and have its cleaning device - Google Patents
Round brush and have its cleaning device Download PDFInfo
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- CN112932325B CN112932325B CN202110211493.3A CN202110211493A CN112932325B CN 112932325 B CN112932325 B CN 112932325B CN 202110211493 A CN202110211493 A CN 202110211493A CN 112932325 B CN112932325 B CN 112932325B
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- rollers
- sections
- roller
- driving
- brush
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0405—Driving means for the brushes or agitators
- A47L9/0411—Driving means for the brushes or agitators driven by electric motor
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4041—Roll shaped surface treating tools
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
- A47L11/4058—Movement of the tools or the like perpendicular to the cleaning surface for adjusting the height of the tool
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4063—Driving means; Transmission means therefor
- A47L11/4069—Driving or transmission means for the cleaning tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to the technical field of cleaning electric appliances, in particular to a rolling brush and cleaning equipment with the same. The present invention provides a roll brush comprising: the at least two sections of rollers are sequentially butted along the axial direction, and the adjacent two sections of rollers are connected in a circumferential rotating way; and the driving mechanism is in transmission connection with the at least two sections of rollers respectively and drives the at least two sections of rollers to rotate relatively independently, and a rotation speed difference exists between the two adjacent sections of rollers. When the rolling brush is used for cleaning a surface to be cleaned, the driving mechanism can drive the adjacent two sections of rollers to have a rotation speed difference, so that the at least two sections of rollers can relatively rotate along the circumferential direction in the working process of the rolling brush, and the hair wound on the rolling brush is torn off by utilizing the rotation speed difference between the at least two sections of rollers and the relative rotation along the circumferential direction, so that the hair wound on the rolling brush is reduced.
Description
Technical Field
The invention relates to the technical field of cleaning electric appliances, in particular to a rolling brush and cleaning equipment with the same.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
Along with the development of social science and technology, the cleaning labor of human beings is replaced by semi-automatic and automatic cleaning equipment such as a dust collector, a sweeping robot and the like more and more, and great convenience is brought to human life. Present dust catcher and robot of sweeping floor have been given more functions, can clear up bright and clean floor, also can clear up the carpet, in the use of dust catcher and robot of sweeping floor, the clearance to house pet's hair and hair is constantly increased, and the longer hair of easy winding of round brush on conventional dust catcher and the robot of sweeping floor, the user need frequently dismantle round brush clearance hair: on one hand, the work of the cleaning equipment is interrupted for many times, which not only wastes time, but also affects the cleaning efficiency; on the other hand, frequent cleaning of the hair greatly affects the cleaning experience of the user.
Disclosure of Invention
The invention aims to solve the technical problem that the use experience of a user is reduced due to the fact that hairs are easy to wind on the existing rolling brush at least to a certain extent.
In order to achieve the above object, a first aspect of the present invention provides a roll brush comprising: the at least two sections of rollers are sequentially butted along the axial direction, and the adjacent two sections of rollers are connected in a circumferential rotating way; and the driving mechanism is in transmission connection with the at least two sections of rollers respectively and drives the at least two sections of rollers to rotate relatively independently, and a rotation speed difference exists between the two adjacent sections of rollers.
When the rolling brush is used for cleaning a surface to be cleaned, the driving mechanism can drive the adjacent two sections of rollers to have a rotation speed difference, so that the at least two sections of rollers can relatively rotate along the circumferential direction in the working process of the rolling brush, and the hair wound on the rolling brush is torn off by utilizing the rotation speed difference between the at least two sections of rollers and the relative rotation along the circumferential direction, so that the hair wound on the rolling brush is reduced.
In addition, the roller brush according to the invention may also have the following additional features:
according to one embodiment of the invention, the driving mechanism comprises a driving device and at least two groups of transmission devices, the at least two groups of transmission devices are in one-to-one transmission connection with the at least two sections of rollers, and each section of rollers is in transmission connection with the driving device through one group of transmission devices.
According to one embodiment of the invention, a containing space is formed inside each section of the roller, a driving shaft of the driving device sequentially penetrates through at least two sections of rollers, and at least two groups of transmission devices are arranged inside at least two sections of rollers one by one.
According to one embodiment of the invention, the inner wall of each section of the drum is provided with an inner gear ring, each set of transmission devices comprises a sun gear and a planetary gear, the sun gear is sleeved on the driving shaft, and the planetary gear is respectively meshed with the sun gear and the inner gear ring.
According to one embodiment of the invention, the rolling brush further comprises a support column arranged in at least two sections of the rollers, and the support column is provided with a shaft hole matched with the driving shaft and a support shaft penetrating through and supporting the planetary gear.
According to one embodiment of the invention, the rolling brush comprises two sections of rollers, the supporting columns are arranged between the two sections of rollers, and the two sections of rollers are in circumferential rotating contact with the supporting columns.
According to one embodiment of the invention, two end covers which are respectively matched with two sections of rollers at two ends are arranged at two ends of the rolling brush, and each end cover is provided with an annular clamping groove matched with one section of roller and a supporting hole matched with the supporting shaft.
According to one embodiment of the invention, two couplings are respectively matched with the two end covers at two ends of the rolling brush, and each coupling is provided with a shaft hole matched with the driving shaft.
According to one embodiment of the invention, two adjacent rollers in the at least two rollers have different thicknesses, the support column is arranged between the two adjacent rollers, and the support column is provided with a stepped matching part matched with the two rollers.
According to one embodiment of the invention, the butt-joint end surface of one roller in the two adjacent roller sections of the at least two roller sections is provided with an annular slot, and the butt-joint end surface of the other roller is provided with an annular bulge matched with the annular slot.
According to one embodiment of the invention, the driving mechanism comprises at least two driving devices and at least two groups of transmission devices, and the at least two driving devices are respectively in one-to-one transmission connection with the at least two sections of rollers through the at least two groups of transmission devices.
According to one embodiment of the invention, the rolling brush comprises two sections of rollers, a containing space is formed inside each section of roller, the two driving devices are respectively arranged at two ends of the rolling brush, two driving shafts of the two driving devices respectively extend into the two sections of rollers, and the two groups of transmission devices are respectively arranged inside the two sections of rollers.
The second aspect of the invention also provides cleaning equipment, the cleaning equipment is provided with the rolling brush according to the first aspect of the invention, the driving mechanism of the rolling brush is electrically connected with the controller of the cleaning equipment, and the controller controls the rotating speed of the driving mechanism for driving at least two sections of rollers according to the type of the surface to be cleaned, which is contacted with the cleaning equipment.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a first cross-sectional view of a roll brush according to one embodiment of the present invention;
FIG. 2 is a second cross-sectional view of a roll brush according to one embodiment of the present invention;
FIG. 3 is a third cross-sectional view of a roll brush according to an embodiment of the present invention;
FIG. 4 is a schematic view of the roller brush shown in FIG. 1 in a disassembled configuration;
FIG. 5 is a schematic view of the transmission of the roll brush of FIG. 1;
FIG. 6 is a schematic view of the roller brush of FIG. 1 with the transmission removed;
FIG. 7 is a schematic view of a portion of a structure A of the roll brush of FIG. 6 according to one embodiment of the present invention;
FIG. 8 is a schematic view of a roller of the roller brush of FIG. 1 according to one embodiment of the present invention;
FIG. 9 is a schematic view of a roller of the roll brush of FIG. 1 according to another embodiment of the present invention; .
Wherein the reference numbers are as follows:
100. rolling and brushing;
10. a drive shaft;
20. a first drum; 21. a first sun gear; 211. a first bearing; 22. a first planetary gear; 221. a second bearing; 23. a first planet gear carrier; 24. a first ring gear; 25. a first end cap; 251. an annular neck; 252. a support hole; 26. a first coupling; 27. an annular projection;
30. a second drum; 31. a second sun gear; 311. a third bearing; 32. a second planetary gear; 321. a fourth bearing; 33. a second planet gear carrier; 34. a second ring gear; 35. a second end cap; 36. a second coupling; 37. an annular slot;
40. a support pillar; 41. a first support shaft; 42. a second support shaft; 43. a third support shaft; 44. a fourth support shaft;
50. a brush assembly.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the roller brush illustrated by two segments of rollers is only a preferred embodiment of the present invention, and is not limited to the number of rollers in the present invention, for example, the roller brush of the present invention may also be provided with three or more segments of rollers, and such an adjustment is within the protection scope of the roller brush of the present invention.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
For convenience in description, spatially relative terms, such as "axial," "circumferential," "inner," "upper," "lower," "bottom," "end," "adjacent," "near," "central," "low," "high," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative relationship is intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The mechanism may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 3, a first aspect of the present invention provides a rolling brush 100, where the rolling brush 100 includes at least two segments of rollers and a driving mechanism, the at least two segments of rollers are sequentially butted along an axial direction, and adjacent two segments of rollers are connected in a circumferential rotation manner, the driving mechanism is respectively connected with the at least two segments of rollers in a transmission manner and drives the at least two segments of rollers to rotate relatively independently, and a rotation speed difference exists between the adjacent two segments of rollers.
In this embodiment, an independent brush assembly 50 or a dust collection sleeve is disposed on an outer wall of each roller, when the roller brush 100 cleans a surface to be cleaned, the driving mechanism drives the rollers to rotate, so as to clean dust and hair on the surface to be cleaned, and meanwhile, the driving mechanism can drive two adjacent sections of rollers to have a rotation speed difference, so that the at least two sections of rollers rotate relatively in a circumferential direction during the operation of the roller brush 100, and the hair wound on the roller brush 100 is torn off by using the rotation speed difference between the at least two sections of rollers and the relative rotation in the circumferential direction, so as to reduce the hair wound on the roller brush 100.
It should be noted that, the driving mechanism provided in the embodiments of the present application includes two embodiments: the first embodiment of the driving mechanism comprises a driving device and at least two groups of transmission devices connected with the driving device, and the driving mechanism realizes the rotation speed difference between at least two sections of rollers through the at least two groups of transmission devices; the second embodiment of the driving mechanism comprises at least two driving devices and at least two sets of transmission devices connected with the at least two driving devices, and the at least two driving devices and the at least two sets of transmission devices realize the rotation speed difference between at least two sections of rollers, for example, the rotation speed difference is provided between two adjacent rollers in the at least two sections of rollers, so that the hairs wound on the two adjacent rollers are torn off. Two embodiments of the drive mechanism are described in detail below with specific embodiments.
First embodiment
The driving mechanism of the embodiment comprises a driving device and at least two groups of transmission devices, wherein the at least two groups of transmission devices are in one-to-one transmission connection with at least two sections of rollers, and each section of roller is in transmission connection with the transmission devices through one group of transmission devices. Specifically, the driving device and the at least two sets of transmission devices may be disposed inside the drum, or may be disposed outside the drum, and the driving device may be a driving motor or a driving device with other structure, for example, the driving device may be an electromagnetic induction coil and a permanent magnet assembly manufactured by using a motor principle, in addition to the driving motor, and preferred embodiments of the driving device and the at least two sets of transmission devices are specifically described below.
The inside of every section cylinder all forms accommodation space, and drive arrangement's drive shaft 10 runs through two sections at least cylinders in proper order, and two sets of at least transmission set up one by one in two sections at least cylinders.
In this embodiment, the transmission ratio of each set of transmission devices is different, and the purpose that at least two sections of rollers have different rotating speeds is achieved through at least two sets of transmission devices with different transmission ratios, and the transmission devices can be common gear transmission devices or planetary gear trains.
As shown in fig. 4, in particular, taking the transmission as an example of a planetary gear system, the inner wall of each drum is provided with an inner gear ring, for example, the inner wall of the first drum 20 is provided with a first inner gear ring 24, the inner wall of the second drum 30 is provided with a second inner gear ring 34, each set of transmission comprises a sun gear and a planetary gear, the sun gear is sleeved on the driving shaft 10, and the planetary gear is meshed with the sun gear and the inner gear ring. Specifically, as shown in fig. 4 and 5, a first planetary gear train including a first sun gear 21 and first planetary gears 22 is provided inside the first drum 20, and the driving shaft 10 transmits a driving force to the first drum 20 through the first sun gear 21 and the first planetary gears 22, thereby rotating the first drum 20.
A second planetary gear train is provided in the second drum 30, the second planetary gear train including a second sun gear 31 and a second planetary gear 32, and the driving shaft 10 transmits a driving force to the second drum 30 through the second sun gear 31 and the second planetary gear 32, thereby rotating the second drum 30. Wherein, the first planetary gear train and the second planetary gear train are both speed reducing gear trains and have different transmission ratios, thereby improving the rotational stability of the first drum 20 and the second drum 30 and the relative rotation between the first drum 20 and the second drum 30.
Since the planetary gear train and the driving shaft 10 are both disposed inside the drum and the axes of the planetary gear train and the driving shaft 10 coincide with or are parallel to the axis of the drum, in order to improve the stability of the driving shaft 10 and the planetary gear train, the driving shaft 10 and the planetary gear train need to be supported inside the drum, thereby reducing the occurrence of a displacement phenomenon of the driving shaft 10 and the planetary gear train inside the drum.
For this purpose, as shown in fig. 4 and 5, the rolling brush 100 of the embodiment of the present application further includes a supporting column 40 disposed in at least two segments of the drum, the supporting column 40 is provided with a shaft hole matched with the driving shaft 10 and a supporting shaft penetrating and supporting the planetary gear, the driving shaft 10 can rotate relative to the supporting column 40 and support the supporting column 40, the first sun gear 21 is sleeved on the driving shaft 10 through a first bearing 211, the first sun gear 21 can rotate relative to the driving shaft 10, the first planetary gear 22 is sleeved on a first supporting shaft 41 through a second bearing 221, the first planetary gear 22 can rotate relative to the first supporting shaft 41, the first drum 20 is further provided with a first planetary gear holder 23 supporting the first planetary gear 22, and the first planetary gear holder 23 can support and limit the first planetary gear 22. In addition, the first planetary gear train may be provided with a plurality of first planetary gears 22 distributed at equal intervals in the circumferential direction, for example, the first planetary gear train may be provided with three first planetary gears 22 distributed at equal intervals in the circumferential direction, and correspondingly, the support column 40 is provided with three support shafts (the first support shaft 41 and the second support shaft 42 can be seen due to the problem of the angle of view) which are engaged with the three first planetary gears 22.
A second planetary gear train is arranged in the second drum 30, the second planetary gear train comprises a second sun gear 31 and a second planetary gear 32, the second sun gear 31 is sleeved on the driving shaft 10 through a third bearing 311, the second planetary gear 32 is sleeved on a third supporting shaft 43 through a fourth bearing 321, and a second planetary gear support 33 supporting the second planetary gear 32 is further arranged in the second drum 30. In addition, the second planetary gear train may be provided with a plurality of second planetary gears 32 distributed at equal intervals in the circumferential direction, for example, the first planetary gear train may be provided with three second planetary gears 32 distributed at equal intervals in the circumferential direction, and correspondingly, the support column 40 is provided with three support shafts (a third support shaft 43 and a fourth support shaft 44 can be seen due to the problem of the angle of view) which are engaged with the three second planetary gears 32.
In addition, the supporting shafts supporting the first planetary gears 22 and the supporting shafts supporting the second planetary gears 32 may be different supporting shafts, for example, a first supporting shaft 41, a second supporting shaft 42, a third supporting shaft 43, and a fourth supporting shaft 44, wherein the first supporting shaft 41 and the third supporting shaft 43 may also be the same supporting shaft, and the second supporting shaft 42 and the fourth supporting shaft 44 may also be the same supporting shaft, and one supporting shaft penetrates the supporting column 40 and extends to the inside of at least two drums, that is, the number of the first planetary gears 22 is the same as the number of the second planetary gears 32, and the distribution positions are the same.
According to one embodiment of the present invention, as shown in fig. 6, the roller brush 100 includes two segments of rollers, the supporting pillars 40 are disposed between the two segments of rollers, and both the two segments of rollers are in circumferential rotational contact with the supporting pillars 40.
In this embodiment, the supporting column 40 can support the two sections of rollers, so as to reduce the collapse of the two sections of rollers at the butt joint end, and the supporting column 40 can also seal the butt joint end between the two sections of rollers, so as to reduce the external dust entering the inside of the rollers through the gap between the two sections of rollers. In addition, the support column 40 is arranged between the two sections of rollers, so that the stress balance of the two sections of rollers and the stress balance of the driving shaft 10 and the supporting shaft can be realized, further, the two sections of rollers have the same shape and structure, and the positions of the two groups of planetary gear trains in the two sections of rollers are the same.
Further, as shown in fig. 7 and 8, according to an embodiment of the present invention, adjacent two sections of the at least two sections of the rollers have different thicknesses, the supporting pillar 40 is disposed between the adjacent two sections of the rollers, and the supporting pillar 40 is provided with a stepped matching portion (not shown) matching with the adjacent two sections of the rollers.
In this embodiment, the two adjacent roller segments are set to have different thicknesses, so that a stepped gap is formed at the butt joint end of the two adjacent roller segments, thereby improving the sealing effect of the two adjacent roller segments at the butt joint end, and the stepped matching portions on the supporting columns 40 are in clearance fit with the two adjacent roller segments respectively, so that the relative rotation between the two adjacent roller segments is not influenced, and the closed sealing effect between the supporting columns 40 and the two adjacent roller segments can be realized. Further, in order to improve the smoothness of the rotation between the roller and the supporting column 40, a sliding bearing is further disposed between the roller and the supporting column 40, and the first roller 20 and the second roller 30 are both sleeved on the supporting column 40 through the sliding bearing.
According to an embodiment of the present invention, as shown in fig. 9, the abutting end surface of one of the two adjacent rollers in at least two roller sections is provided with an annular slot 37, and the abutting end surface of the other roller is provided with an annular protrusion 27 which is matched with the annular slot 37.
In this embodiment, the annular protrusion 27 and the annular slot 37 are in clearance fit, so as to reduce the friction resistance during the relative rotation of the two sections of rollers, and meanwhile, a stepped gap is formed at the butt joint end of the two sections of rollers through the fit of the annular protrusion 27 and the annular slot 37, so as to improve the sealing effect and the butt joint stability of the two sections of rollers at the butt joint end.
With continued reference to fig. 1, according to an embodiment of the present invention, two ends of the rolling brush 100 are provided with two end covers respectively engaged with two sections of rollers at two ends, for example, one end of the first roller 20 is provided with a first end cover 25, one end of the second roller 30 is provided with a second end cover 35, each end cover is provided with an annular clamping groove 251 engaged with one section of roller and a supporting hole 252 engaged with the supporting shaft, two ends of the rolling brush 100 are provided with two couplers respectively engaged with two end covers, for example, the first end cover 25 is provided with a first coupler 26, the second end cover 35 is provided with a second coupler 36, and each coupler is provided with a shaft hole engaged with the driving shaft 10.
In the present embodiment, the end cap and the coupling cooperate to support the driving shaft 10 and the supporting shaft, and the end cap can also seal the two ends of the rolling brush 100. Specifically, the ring-shaped clamping groove 251 and the supporting hole 252 are arranged on the end cover from outside to inside, and the end cover, the roller and the supporting shaft are in clearance fit or are connected through a bearing, so that the purpose that the roller and the supporting shaft are connected with the end cover in a circumferential rotating manner is achieved.
According to an embodiment of the present invention, the roller brush 100 further includes a roller brush housing (not shown) and an elastic member (not shown) disposed inside the roller brush housing, and the driving mechanism and the at least two segments of rollers are disposed inside the roller brush housing in a manner of being floated up and down by the elastic member.
In this embodiment, the rolling brush 100 is installed in the rolling brush housing in a vertically floating manner, a rolling brush cavity is formed in the rolling brush housing, the rolling brush 100 is rotatably installed on the rolling brush housing and located in the rolling brush cavity, the rolling brush 100 further includes a limiting mechanism (not shown in the figure), the limiting mechanism includes a driving element and a limiting member, the driving element is disposed on the rolling brush housing and connected with the limiting member, and the driving element drives the limiting member to limit the vertical floating stroke of the rolling brush 100. The rolling brush 100 of the present invention can limit the upper floating stroke of the rolling brush 100 by the limit mechanism when cleaning a soft surface to be cleaned such as a carpet, thereby improving the attachment degree of the rolling brush 100 to the carpet, and can limit the lower floating stroke of the rolling brush 100 by the limit mechanism when cleaning a hard surface to be cleaned such as a floor, thereby reducing the attachment degree of the rolling brush 100 to the floor and lowering the operating noise of the rolling brush 100.
Second embodiment
According to an embodiment of the present invention, the rolling brush 100 includes at least two segments of rollers, and the driving mechanism includes at least two driving devices and at least two sets of transmission devices, and the at least two driving devices are respectively in one-to-one transmission connection with the at least two segments of rollers through the at least two sets of transmission devices.
In this embodiment, the at least two driving devices and the at least two sets of transmission devices are used to realize the rotation speed difference between the at least two sections of rollers, for example, the rotation speed difference between two adjacent rollers in the at least two sections of rollers is provided, so that the hair wound on the two adjacent rollers is torn off. Specifically, at least two sets of drive arrangement and at least two sets of transmission can set up in the inside of cylinder, can also set up in the outside of cylinder, and drive arrangement can be the drive motor or the drive arrangement of other structures, for example the electromagnetic induction coil and the permanent magnet subassembly of making by utilizing the motor principle, and the rotational speed of two adjacent drive arrangement is different or the drive ratio of two adjacent transmission is different to this effect that two adjacent cylinders possess different rotational speeds is realized.
Specifically, according to an embodiment of the present invention, the roller brush 100 includes two sections of rollers, a receiving space is formed inside each section of roller, two driving devices are respectively disposed at two ends of the roller brush 100, two driving shafts 10 of the two driving devices respectively extend into the two sections of rollers, and two sets of transmission devices are respectively disposed inside the two sections of rollers. The purpose of driving the two sections of rollers to work at different rotating speeds is achieved through the two driving devices with different rotating speeds.
In addition, taking the driving device as an example of the driving motor, the two groups of driving motors may have a phase difference, and the two groups of driving motors have the same rotation speed, so as to achieve the effect of relative rotation between the two rollers.
Further, according to the embodiment of the present invention, in order to reduce the phenomenon that the rolling brush 100 winds the hair, the outer wall of the roller is provided with the brush assembly 50 distributed along the length direction of the roller, the rolling brush 100 further includes a sleeve (not shown) detachably sleeved on the roller and an elastic shaving strip (not shown) arranged on the sleeve, the radial outer end of the elastic shaving strip is closer to the central axis of the roller than the radial outer end of the brush assembly, the wall of the sleeve is provided with an opening for the brush assembly to pass through along the radial direction of the sleeve, the sleeve can reduce the phenomenon that the hair winds the root of the hair, and even if the hair winds the rolling brush 100, the sleeve can be removed from the rolling brush 100, so as to clean the wound hair on the rolling brush 100. When the elastic shaving strip is subjected to external force in the moving process of the rolling brush 100 and is restored to the original state, filaments such as hair wound on the rolling brush 100 can be peeled off by utilizing the elastic potential energy of the elastic shaving strip, and the height of the elastic shaving strip is lower than that of the shaving strip on the rolling brush 100, so that the phenomenon that the elastic shaving strip is in contact with a surface to be cleaned is reduced.
In addition, because the section of thick bamboo wall of sleeve is provided with the bar hole of avoiding the brush subassembly, that is to say, the bar hole in this application embodiment can not produce the interference to the brush subassembly, can not influence the normal work of brush subassembly more, for example, can not influence the crooked and unbend of brush subassembly in the course of the work, the part that lies in the bar hole on the sleeve only plays the root that reduces the brush subassembly and the contact of filiform such as hair to this phenomenon of filiform such as reduction hair twines to the root of brush subassembly
In addition, the other structures in the second embodiment are similar to the first embodiment, for example, the transmission device in the second embodiment may be a common gear transmission device, and may also be a planetary gear train, taking the transmission device as a planetary gear train, an inner gear ring is disposed on the inner wall of each section of drum, each set of transmission device includes a sun gear and a planetary gear, the sun gear is sleeved on the driving shaft 10 of the driving device, and the planetary gear is meshed with the sun gear and the inner gear ring. Specifically, as shown in fig. 4 and 5, a first planetary gear train including a first sun gear 21 and first planetary gears 22 is provided inside the first drum 20, and the driving shaft 10 transmits a driving force to the first drum 20 through the first sun gear 21 and the first planetary gears 22, thereby rotating the first drum 20.
A second planetary gear train is provided in the second drum 30, the second planetary gear train including a second sun gear 31 and a second planetary gear 32, and the driving shaft 10 transmits a driving force to the second drum 30 through the second sun gear 31 and the second planetary gear 32, thereby rotating the second drum 30. Wherein, the first planetary gear train and the second planetary gear train are both speed reducing gear trains and have different transmission ratios, thereby improving the rotational stability of the first drum 20 and the second drum 30 and the relative rotation between the first drum 20 and the second drum 30.
Since the planetary gear train and the driving shaft 10 are both disposed inside the drum and the axes of the planetary gear train and the driving shaft 10 coincide with or are parallel to the axis of the drum, in order to improve the stability of the driving shaft 10 and the planetary gear train, the driving shaft 10 and the planetary gear train need to be supported inside the drum, thereby reducing the occurrence of a displacement phenomenon of the driving shaft 10 and the planetary gear train inside the drum.
For this purpose, as shown in fig. 4 and 5, the rolling brush 100 of the embodiment of the present application further includes a supporting column 40 disposed in at least two segments of the drum, the supporting column 40 is provided with a shaft hole matched with the driving shaft 10 and a supporting shaft penetrating and supporting the planetary gear, the driving shaft 10 can rotate relative to the supporting column 40 and support the supporting column 40, the first sun gear 21 is sleeved on the driving shaft 10 through a first bearing 211, the first sun gear 21 can rotate relative to the driving shaft 10, the first planetary gear 22 is sleeved on a first supporting shaft 41 through a second bearing 221, the first planetary gear 22 can rotate relative to the first supporting shaft 41, the first drum 20 is further provided with a first planetary gear holder 23 supporting the first planetary gear 22, and the first planetary gear holder 23 can support and limit the first planetary gear 22. In addition, the first planetary gear train may be provided with a plurality of first planetary gears 22 distributed at equal intervals in the circumferential direction, for example, the first planetary gear train may be provided with three first planetary gears 22 distributed at equal intervals in the circumferential direction, and correspondingly, the support column 40 is provided with three support shafts (the first support shaft 41 and the second support shaft 42 can be seen due to the problem of the angle of view) which are engaged with the three first planetary gears 22.
A second planetary gear train is arranged in the second drum 30, the second planetary gear train comprises a second sun gear 31 and a second planetary gear 32, the second sun gear 31 is sleeved on the driving shaft 10 through a third bearing 311, the second planetary gear 32 is sleeved on a third supporting shaft 43 through a fourth bearing 321, and a second planetary gear support 33 supporting the second planetary gear 32 is further arranged in the second drum 30. In addition, the second planetary gear train may be provided with a plurality of second planetary gears 32 distributed at equal intervals in the circumferential direction, for example, the first planetary gear train may be provided with three second planetary gears 32 distributed at equal intervals in the circumferential direction, and correspondingly, the support column 40 is provided with three support shafts (a third support shaft 43 and a fourth support shaft 44 can be seen due to the problem of the angle of view) which are engaged with the three second planetary gears 32.
In addition, the supporting shafts supporting the first planetary gears 22 and the supporting shafts supporting the second planetary gears 32 may be two different supporting shafts, or may be the same supporting shaft, and one supporting shaft penetrates the supporting column 40 and extends to the inside of at least two drums, that is, the number of the first planetary gears 22 is the same as that of the second planetary gears 32, and the distribution positions are the same.
According to one embodiment of the present invention, as shown in fig. 6, the roller brush 100 includes two segments of rollers, the supporting pillars 40 are disposed between the two segments of rollers, and both the two segments of rollers are in circumferential rotational contact with the supporting pillars 40.
In this embodiment, the supporting column 40 can support the two sections of rollers, so as to reduce the collapse of the two sections of rollers at the butt joint end, and the supporting column 40 can also seal the butt joint end between the two sections of rollers, so as to reduce the external dust entering the inside of the rollers through the gap between the two sections of rollers. In addition, the support column 40 is arranged between the two sections of rollers, so that the stress balance of the two sections of rollers and the stress balance of the driving shaft 10 and the supporting shaft can be realized, further, the two sections of rollers have the same shape and structure, and the positions of the two groups of planetary gear trains in the two sections of rollers are the same.
Further, as shown in fig. 7 and 8, according to an embodiment of the present invention, adjacent two sections of the at least two sections of the rollers have different thicknesses, the supporting pillar 40 is disposed between the adjacent two sections of the rollers, and the supporting pillar 40 is provided with a stepped matching portion (not shown) matching with the adjacent two sections of the rollers.
In this embodiment, the two adjacent roller segments are set to have different thicknesses, so that a stepped gap is formed at the butt joint end of the two adjacent roller segments, thereby improving the sealing effect of the two adjacent roller segments at the butt joint end, and the stepped matching portions on the supporting columns 40 are in clearance fit with the two adjacent roller segments respectively, so that the relative rotation between the two adjacent roller segments is not influenced, and the closed sealing effect between the supporting columns 40 and the two adjacent roller segments can be realized. Further, in order to improve the smoothness of the rotation between the roller and the supporting column 40, a sliding bearing is further disposed between the roller and the supporting column 40, and the first roller 20 and the second roller 30 are both sleeved on the supporting column 40 through the sliding bearing.
According to an embodiment of the present invention, as shown in fig. 9, the abutting end surface of one of the two adjacent rollers in at least two roller sections is provided with an annular slot 37, and the abutting end surface of the other roller is provided with an annular protrusion 27 which is matched with the annular slot 37.
In this embodiment, the annular protrusion 27 and the annular slot 37 are in clearance fit, so as to reduce the friction resistance during the relative rotation of the two sections of rollers, and meanwhile, a stepped gap is formed at the butt joint end of the two sections of rollers through the fit of the annular protrusion 27 and the annular slot 37, so as to improve the sealing effect and the butt joint stability of the two sections of rollers at the butt joint end.
With continuing reference to fig. 1, according to an embodiment of the present invention, two ends of the rolling brush 100 are provided with two end covers respectively engaged with two sections of rollers at two ends, each end cover is provided with an annular clamping groove engaged with one section of roller and a supporting hole engaged with the supporting shaft, two ends of the rolling brush 100 are provided with two couplers respectively engaged with the two end covers, and each coupler is provided with a shaft hole engaged with the driving shaft 10.
In the present embodiment, the end cap and the coupling cooperate to support the driving shaft 10 and the supporting shaft, and the end cap can also seal the two ends of the rolling brush 100. Specifically, the ring-shaped clamping groove 251 and the supporting hole 252 are arranged on the end cover from outside to inside, and the end cover, the roller and the supporting shaft are in clearance fit or are connected through a bearing, so that the purpose that the roller and the supporting shaft are connected with the end cover in a circumferential rotating manner is achieved.
According to an embodiment of the present invention, the roller brush 100 further includes a roller brush housing (not shown) and an elastic member (not shown) disposed inside the roller brush housing (not shown), and the driving mechanism and the at least two segments of rollers are disposed inside the roller brush housing in a manner of being able to float up and down through the elastic member.
In this embodiment, as for the technical scheme that at least two segments of rollers are disposed in the rolling brush shell in a vertically floating manner through an elastic element, reference may be made to patent publication No. CN111938505A, where the rolling brush 100 is disposed in the rolling brush shell in a vertically floating manner, and a rolling brush cavity is disposed in the rolling brush shell, the rolling brush 100 is rotatably disposed on the rolling brush shell and located in the rolling brush cavity, the rolling brush 100 further includes a limiting mechanism (not shown in the figure), the limiting mechanism includes a driving element and a limiting member, the driving element is disposed on the rolling brush shell and connected to the limiting member, and the driving element drives the limiting member to limit the vertical floating stroke of the rolling brush 100. The rolling brush 100 of the present invention can limit the upper floating stroke of the rolling brush 100 by the limit mechanism when cleaning a soft surface to be cleaned such as a carpet, thereby improving the attachment degree of the rolling brush 100 to the carpet, and can limit the lower floating stroke of the rolling brush 100 by the limit mechanism when cleaning a hard surface to be cleaned such as a floor, thereby reducing the attachment degree of the rolling brush 100 to the floor and lowering the operating noise of the rolling brush 100.
Further, under the condition that the driving mechanism comprises at least two driving devices which correspond to at least two sections of rollers one to one, one driving device and one corresponding section of roller form a group of rolling brush units, each group of rolling brush units are independent, two adjacent groups of rolling brush units can float relatively, and filaments such as hairs wound on the rolling brush can be torn off through the relative floating between the two adjacent groups of rolling brush units.
In addition, the two embodiments described above illustrate the specific structure and specific implementation manner of the roller brush 100 by two rollers, however, it does not mean that the roller brush 100 has only two rollers, in other embodiments of the present application, the roller brush 100 may also have three or four equal rollers, and correspondingly, the driving mechanism includes three or four equal driving devices and includes three or four equal transmission devices, and such adjustment is within the protection scope of the present application and will not be described in detail herein.
With continued reference to fig. 1, the second aspect of the present invention further provides a cleaning device, the cleaning device is provided with the rolling brush 100 according to the first aspect of the present invention, the driving mechanism of the rolling brush 100 is electrically connected with the controller of the cleaning device, and the controller drives the rotation speed of the roller of the rolling brush 100 through the driving mechanism according to the type of the surface to be cleaned contacted by the cleaning device, for example, when there is more hair on the surface to be cleaned, a larger rotation speed difference between adjacent rollers can be driven.
In this embodiment, when the cleaning device cleans the surface to be cleaned, the purpose of breaking the hair entangled on the roller brush 100 can be achieved by the difference of the rotation speed between the two adjacent rollers on the roller brush 100. Specifically, the driving mechanism drives the rollers to rotate, so as to clean dust and hair on the surface to be cleaned, and meanwhile, the driving mechanism can drive two adjacent sections of rollers to have a rotation speed difference, so that at least two sections of rollers rotate relatively in the circumferential direction in the working process of the rolling brush 100, and the hair wound on the rolling brush 100 is torn off by utilizing the rotation speed difference between the two sections of rollers and the relative rotation in the circumferential direction, so as to reduce the hair wound on the rolling brush 100.
In addition, the cleaning device may be one of a self-moving cleaning device, a handheld cleaner and a canister cleaner, the above-mentioned roller brush 100 and the cleaning device are only described in relation to the invention, and other structures on the cleaning device, such as the internal structure of the controller and specific operation instructions, will not be described one by one herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A roll brush, characterized in that the roll brush comprises:
the at least two sections of rollers are sequentially butted along the axial direction, and the adjacent two sections of rollers are connected in a circumferential rotating way;
the driving mechanism is in transmission connection with the at least two sections of rollers respectively and drives the at least two sections of rollers to rotate relatively and independently, and a rotation speed difference is formed between the two adjacent sections of rollers,
the driving mechanism comprises a driving device and at least two groups of transmission devices, the at least two groups of transmission devices are in one-to-one transmission connection with the at least two sections of rollers, and each section of roller is in transmission connection with the driving device through one group of transmission devices;
an accommodating space is formed inside each section of roller, a driving shaft of the driving device sequentially penetrates through the at least two sections of rollers, and the at least two groups of transmission devices are arranged inside the at least two sections of rollers one by one;
the inner wall of each section of the roller is provided with an inner gear ring, each group of transmission devices comprises a sun gear and a planetary gear, the sun gear is sleeved on the driving shaft, and the planetary gear is respectively meshed with the sun gear and the inner gear ring;
the rolling brush further comprises a supporting column arranged in the at least two sections of rollers, a shaft hole matched with the driving shaft and a supporting shaft penetrating through and supporting the planetary gear are arranged on the supporting column, two adjacent sections of rollers in the at least two sections of rollers have different thicknesses, the supporting column is arranged between the two adjacent sections of rollers, and a stepped matching portion matched with the two adjacent sections of rollers is arranged on the supporting column.
2. The roller brush of claim 1, wherein the roller brush comprises two segments of rollers, the support posts are disposed between the two segments of rollers, and both segments of rollers are in circumferential rotational contact with the support posts.
3. The roller brush according to claim 2, wherein two ends of the roller brush are respectively provided with two end covers which are respectively matched with the two sections of rollers at the two ends, and each end cover is provided with an annular clamping groove matched with one section of roller and a supporting hole matched with the supporting shaft.
4. The round brush according to claim 3, wherein two couplings are provided at both ends of the round brush to be engaged with the two end caps, respectively, and each coupling is provided with a shaft hole to be engaged with the driving shaft.
5. The roller brush according to claim 1, wherein the abutting end face of one of the at least two adjacent roller segments is provided with an annular slot, and the abutting end face of the other roller segment is provided with an annular protrusion which is matched with the annular slot.
6. The roller brush according to claim 1, wherein the driving mechanism comprises at least two driving devices and at least two sets of transmission devices, and the at least two driving devices are respectively in one-to-one transmission connection with the at least two sections of rollers through the at least two sets of transmission devices.
7. The roller brush according to claim 6, wherein the roller brush comprises two sections of rollers, a receiving space is formed inside each section of roller, the two driving devices are respectively arranged at two ends of the roller brush, two driving shafts of the two driving devices respectively extend into the two sections of rollers, and the two sets of transmission devices are respectively arranged inside the two sections of rollers.
8. A cleaning device, characterized in that the cleaning device is provided with a rolling brush according to any one of claims 1-7, a driving mechanism of the rolling brush is electrically connected with a controller of the cleaning device, and the controller controls the rotating speed of the driving mechanism for driving the at least two sections of rollers according to the type of the surface to be cleaned contacted by the cleaning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211493.3A CN112932325B (en) | 2021-02-25 | 2021-02-25 | Round brush and have its cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211493.3A CN112932325B (en) | 2021-02-25 | 2021-02-25 | Round brush and have its cleaning device |
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| Publication Number | Publication Date |
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| CN112932325A CN112932325A (en) | 2021-06-11 |
| CN112932325B true CN112932325B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110211493.3A Active CN112932325B (en) | 2021-02-25 | 2021-02-25 | Round brush and have its cleaning device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066247A1 (en) * | 2021-10-18 | 2023-04-27 | 宁波富佳实业股份有限公司 | Hair-cutting roller brush with reusable drive structure, and cleaning device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW296608U (en) * | 1996-07-09 | 1997-01-21 | Jian-Sheng Chen | Road-sweeping machines (road broom) |
| CN203322192U (en) * | 2013-05-29 | 2013-12-04 | 管阿国 | Transmission device |
| CN103470715A (en) * | 2013-09-30 | 2013-12-25 | 江阴迈森金属制品有限公司 | Roller rotating speed differential device |
| CN104939767A (en) * | 2014-03-27 | 2015-09-30 | 冠达星股份有限公司 | Transmission device for novel differential rotation mop |
| CN205780619U (en) * | 2016-04-21 | 2016-12-07 | 深圳市罗斯特传动设备有限公司 | One can self-regulating planet wheel decelerator |
| CN206571909U (en) * | 2017-03-28 | 2017-10-20 | 石家庄铁能机电设备有限公司 | Gear reduction unit |
| CN209018625U (en) * | 2018-09-04 | 2019-06-25 | 江苏美的清洁电器股份有限公司 | Round brush driving device and cleaning device |
| CN111700545A (en) * | 2020-06-01 | 2020-09-25 | 江苏美的清洁电器股份有限公司 | Floor sweeping robot |
| WO2020213653A1 (en) * | 2019-04-16 | 2020-10-22 | バルミューダ株式会社 | Vacuum cleaner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010110344A (en) * | 2008-11-04 | 2010-05-20 | Panasonic Corp | Electric vacuum cleaner |
-
2021
- 2021-02-25 CN CN202110211493.3A patent/CN112932325B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW296608U (en) * | 1996-07-09 | 1997-01-21 | Jian-Sheng Chen | Road-sweeping machines (road broom) |
| CN203322192U (en) * | 2013-05-29 | 2013-12-04 | 管阿国 | Transmission device |
| CN103470715A (en) * | 2013-09-30 | 2013-12-25 | 江阴迈森金属制品有限公司 | Roller rotating speed differential device |
| CN104939767A (en) * | 2014-03-27 | 2015-09-30 | 冠达星股份有限公司 | Transmission device for novel differential rotation mop |
| CN205780619U (en) * | 2016-04-21 | 2016-12-07 | 深圳市罗斯特传动设备有限公司 | One can self-regulating planet wheel decelerator |
| CN206571909U (en) * | 2017-03-28 | 2017-10-20 | 石家庄铁能机电设备有限公司 | Gear reduction unit |
| CN209018625U (en) * | 2018-09-04 | 2019-06-25 | 江苏美的清洁电器股份有限公司 | Round brush driving device and cleaning device |
| WO2020213653A1 (en) * | 2019-04-16 | 2020-10-22 | バルミューダ株式会社 | Vacuum cleaner |
| CN111700545A (en) * | 2020-06-01 | 2020-09-25 | 江苏美的清洁电器股份有限公司 | Floor sweeping robot |
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| CN112932325A (en) | 2021-06-11 |
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